Solve the problem.The formula v = 
can be used to estimate the speed of a car, v, in miles per hour, based on the length, L, in feet, of its skid marks upon sudden braking on a dry asphalt road. If a car is involved in an accident and its skid marks measure 20 feet, at what estimated speed was the car traveling when it applied its brakes just prior to the accident?
A. 20 mph
B. 15 mph
C. 25 mph
D. 30 mph
Answer: A
Mathematics
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Expand the quotient by partial fractions.
A. 
+ 
B. 
+ 
C. 
+ 
D. 
+ 
Mathematics
Find the volume of the solid generated by revolving the region about the given line.The region in the first quadrant bounded above by the line y = 3x3, below by x-axis, and on the right by the line x = 1, about the line y = - 1
A. 
?
B. 
?
C. 
?
D. 
?
Mathematics
Find the exact value of the expression.sin 20° cos 100° + cos 20° sin 100°
A. 
B. 
C. - 
D. - 
Mathematics
Solve the equation.|r - 1| = 3
A. 2, 4 B. -4 C. -2, 4 D. empty set
Mathematics